Al3+ substituted U-type hexaferrites Ba4Co2Fe36−xAlxO60: structural, magnetic, electrical and dielectric properties

Polycrystalline samples of Al 3+ -substituted barium–cobalt U-type hexagonal ferrites, with the chemical composition Ba 4 Co 2 Fe 36− x Al x O 60 ( x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), were synthesised.